Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1edc0171d7bdec6…

MALICIOUS

PDF

184.3 KB Created: 2015-08-08 10:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d6ff82b0922f07d68beb76938833435c SHA-1: f2168a4ca4946024c53b0c65db0ff537ab8c4c3e SHA-256: d1edc0171d7bdec666038c554378b9aca3da20229346d182d53f67ae73e7ff6c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious redirector attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Dropper.Agent-7527855-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7527855-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=opengl+es+20+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385057_skinuy_yendermenov_dlya_minecraft.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384015_vuykroyki_odezhduy_besplatno_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386448_slavyanskiy_shrift_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a2b3.bin
8fecdab639921bb017c6a4de5a06022c8a9ba701c4763f87019afbc27e1b2922		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A2B3 7056 bytes
font_00_sfnt_off00023d89.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D89 3556 bytes
font_01_sfnt_off00024b0c.bin
d99edcb6c3562852e8c3a8fe2bb48ea8428375711c9601018a12e5df2a0d002d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B0C 14608 bytes
font_02_sfnt_off000277eb.bin
5109f6c2e752cd7258cd7f4d422659a6e0bd658c1d49a07c4c09c4895ce7d131		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277EB 14632 bytes
font_04_sfnt_off0002b73f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B73F 6084 bytes
font_05_sfnt_off0002c6d4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6D4 3752 bytes

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